package cn.bdqn.controller;

import cn.bdqn.common.R;
import cn.bdqn.entity.Employee;
import cn.bdqn.service.EmployeeService;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
     * 登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码password进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2.根据页面提交的用户名查询数据库
        LambdaQueryWrapper<Employee> QueryWrapper = new LambdaQueryWrapper<Employee>();
        QueryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(QueryWrapper);

        //3.账号没有查询到，返回登录失败
        if (emp == null) {
            return R.error("登录失败！");
        }
        //4.密码比对，如果不一致则返回失败
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败！");
        }
        //5.查看账号状态，如果已禁用，则返回禁用
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用！");
        }
        //6.登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 注销
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功！");
    }


    /**
     * 新增员工
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        //设置初试密码123456，需要进行MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());

        //获得当前用户登录的id
        // Long empid = (Long) request.getSession().getAttribute("employee");
        // employee.setCreateUser(empid);
        // employee.setUpdateUser(empid);

        employeeService.save(employee);

        return R.success("注册成功！");
    }

    /**
     * 员工信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //构造分页构造器
        Page<Employee> pageInfo = new Page<Employee>(page, pageSize);
        //条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //条件筛选
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }


    /**
     * 根据id修改员工状态,禁用，启用
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee) {
        // Long empid = (Long) request.getSession().getAttribute("employee");
        // employee.setUpdateTime(LocalDateTime.now());
        // employee.setUpdateUser(empid);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功！");
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getByid(@PathVariable Long id) {
        Employee byId = employeeService.getById(id);
        if (byId != null) {
            return R.success(byId);
        }
        return R.error("查无数据！");
    }
}
